SoundID Reference Upgrade from Headphones to Speakers & Headphones.

This SoundID Reference upgrade turns a permanent Headphones licence into the Speakers & Headphones edition. With a measurement microphone (sold separately; Sonarworks recommends its own) on an audio interface with +48V phantom power, it measures how your stereo monitors behave in your room and builds a calibration profile that corrects them, alongside ready-made profiles for 500+ headphone models. Presets switch between outputs, so every mix decision starts from the same sound. Surround rooms need the Multichannel edition.